"Dai Zhou, what do you think this is?"
Li Shimin asked anyway.
How did Dai Zhou know?
At this moment, a voice came from beside him.
Interrupting Li Shimin's words.
"Welcome to the astronomy area of the Tang Dynasty Library!"
Li Shimin turned his head and saw where the sound came from.
It turns out there are a few stereo-like beings around me.
When people come here, a sound will be emitted to introduce everything here.
What a magical thing.
This will be called multimedia in the future! It only lacks images, but models can replace images, allowing people to immerse themselves in it, and it feels very different!
In this way, it makes people feel a little smart. It's like a person is standing next to you and introducing everything.
In ancient times, this was simply a masterpiece.
The voice didn't wait for them to react, and then said:
"The location you are in is a model of the solar system. The sun is surrounded by eight planets. In order of distance from the sun, they are Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune. Our location is called Earth. It is the third planet from the sun and the most habitable planet among the eight planets."
The voice introduced.
This has refreshed Li Shimin's understanding.
So that’s how it is!
Is this an unknown world? It turns out to be so big!
He murmured: "We live on the earth? Is the earth round? Where is the sky? Is it also round?"
At this time, the model of the earth lit up, and it was so small! this……
This was completely beyond his knowledge.
He was so ignorant before!
But then again, is this all true? Is there any basis for this? Everything is unknown!
The voice did not stop, but continued: "About 30% of the earth's surface is land composed of continents and islands. The remaining 70% is covered by water, most of which are covered by oceans, bays and other salty water bodies, and are also covered by lakes, Covered by rivers and other bodies of fresh water, which together form the hydrosphere. Most of the Earth's polar regions are covered by ice."
This knowledge was forced into Li Shimin's head, and every word was shocking.
"Earth's atmosphere is primarily composed of nitrogen and oxygen."
What is this? What is nitrogen oxide? What kind of existence is that?
The voice kept going and continued:
"The Earth's gravity interacts with other objects in space, especially the moon, which is what we call the moon and is the Earth's only natural satellite. It takes approximately 365.25 days for the Earth to orbit the sun once. The Earth's rotation axis is relatively opposite Tilt in the plane of its orbit, thus producing seasons on Earth. Gravitational interactions between the Earth and the Moon cause tides that stabilize the Earth's orientation on its axis and gradually slow down its rotation.
It takes one day for the earth to rotate once! When your back is to the sun, it’s night, when you’re facing the sun, it’s day! "
At this time, a sphere smaller than the earth lit up.
This is the moon, right?
Tides turn out to be influenced by the moon.
Li Shimin was going crazy.
A knowledge that he himself could not understand at all was placed directly before his eyes.
"The earth is surrounded by an atmosphere, and these atmospheres, to people on earth, are the beginning of the sky! The stars seen here are planets one after another."
The stars in the sky are just one planet after another.
This touches on Li Shimin's knowledge blind spot.
I see.
In ancient times, it was believed that stars were the eyes of gods! Or people turn into stars after death.
And maybe it is the incarnation of the gods in the sky or something.
For example, Wenquxing is one of the Seven Stars of the Big Dipper. It is also a divine star, and so are the other six stars.
Because in ancient times we could not go to heaven, our understanding of the earth and stars remained at the level of self-awareness.
However, in the future, with some high-tech equipment, we will realize that there is an earth, a sun, and other stars.
And the Milky Way...
Wait for all this stuff.
Li Shimin stood there blankly, not knowing what to say.
Dai Zhou was even more shocked.
After a long time, the voice stopped.
Li Shimin murmured: "Is this true? Is there any basis for this?"
Yes, it is obviously impossible to convince him with these things alone.
"Why don't we go read a book? Maybe there is an introduction to these things in the book:"
Dai Zhou suggested.
So the two of them walked towards the bookshelf.
As soon as they left, the voice said again: "Welcome again next time! Goodbye!"
This...this is too smart!
The two ignored it and looked at the bookshelf.
There are many books here.
Rows of books are placed on the bookshelves.
The bookshelves are nearly three meters high.
It is actually made of steel, so it is very strong.
There are also movable stairs on the side for people to go up and down.
They walked to the bookshelf.
I have read so many books that I don’t know where to start.
While they were reading, a small conversation came from the side.
"I never thought the earth was round!"
"How to say?"
"What this says is completely consistent with my experience. I didn't realize it before."
"While sailing on the sea at night, the familiar stars will gradually disappear, and many new stars will appear. This can also prove that the earth is a sphere, because if the earth is a plane, no matter where it is, the stars that can be seen should be identical."
"It does make sense. If it is round, the next day, at the same time and in the same position, we can see the same things. If it is square, it will be the same no matter what time it is."
"Yes, this also proves that the moon and the sun can exist at the same time, just like the moon and the sun during the day. You can understand all this by looking at this diagram."
The phenomenon of the sun and the moon appearing at the same time is called: the sun and the moon shine at the same time.
This phenomenon is caused by the simultaneous appearance of the sun and the moon in the sky due to the different rotation periods of the earth around the sun and the moon around the earth.
Certain conditions are required for the direct observation of the sun and moon astronomical phenomenon with the naked eye. Generally, it can only be seen in broad daylight during the 21st to 23rd of the lunar calendar in the autumn months when the sky is clear and visibility is good.
Li Shimin was shocked by such evidence before he even read the book.
At the same time, I was greatly amazed that Li Min had studied so deeply.
These are things they have not studied.
It turns out that everything Shengtang Group does is not just economic.
The in-depth cultivation of knowledge is also shocking.
At this time, Li Shimin was still listening carefully to the conversation between the two.
But at this time, the conversation between the two stopped.
When Li Shimin was puzzled, someone came over.
It's an old man in formal clothes.
